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Effect of enzymatic treatments on strength properties of unbleached Kenaf bast pulp
University of Ibadan, Nigeria.
University of Benin, Nigeria. (GoFP)ORCID iD: 0000-0002-8790-8964
2013 (English)In: Bioscience Research Journal, ISSN 0795-8072, Vol. 25, no 2, p. 97-102Article in journal (Refereed) Published
Abstract [en]

Kenaf bast fibres were obtained from the Institute of Agricultural Research and Training (IAR & T), MoorPlantation, Ibadan. The fibres were washed with fresh water, air dried and cut into smaller pieces of 3-5cm long for ease ofpulping. These were cooked for 55 minutes at 170oC in a single batch of a digester. The pulp obtained was washed, oven-driedand soaked in distilled water and beaten at three levels of 900, 1800 and 4800 revolutions respectively. The pulp was treated withMultifect-B, an enzymatic mixture of glucanases and xylanases for 30, 60 and 120 minutes prior to handsheet making. Tear andBurst index were calculated from the resulting handsheets. The results showed that the tear strength decreased from 7.6 mN.m2/gat initial to 6.3 mN.m2/g at 120 minutes of enzyme contact for unbeaten pulp, while pulp beaten at 900 revolutions exhibitedhighest decrease in tear strength from 9.2 mN.m2/g at initial to 5.6 mN.m2/g at 120 minutes, representing a 40% decrease. Forpulp beaten at 1800 revolutions, the burst index increased from 3.1 kPa.m2/g for untreated to 3.4 kPa.m2/g at 60 minutestreatment time and decreased sharply to 2.8 kPa.m2/g at 120 minutes. However, there was no significant difference in the tearindex with the levels of beating (p < 0.05). It was concluded that enzymatic hydrolysis significantly improved burst index whileonly affecting the tear index.

Place, publisher, year, edition, pages
Nigerian Society for Experimental Biology , 2013. Vol. 25, no 2, p. 97-102
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
URN: urn:nbn:se:lnu:diva-81159OAI: oai:DiVA.org:lnu-81159DiVA, id: diva2:1297304
Available from: 2019-03-19 Created: 2019-03-19 Last updated: 2019-03-26Bibliographically approved

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Amiandamhen, Stephen

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CiteExportLink to record
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Citation style
  • apa
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  • modern-language-association-8th-edition
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